r&s®ngu source measure units

The top-class in supplying power

R&S®NGU SOURCE MEASURE UNITS

Data Sheet Version 01.00

year

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Thanks to their extremely high accuracy and fast load recovery time, the R&S®NGU source measure units (SMU) are perfect for challenging applications. A special ammeter design is used to precisely measure current drains from nA to A in one pass – no need to make multiple measurement sweeps. The instruments’ short recovery times enable them to handle fast load changes that occur, for example, when mobile communications devices switch from sleep mode to transmit mode. With high speed data acquisition, every detail is detected down to 2 μs resolution. The R&S®NGU source measure units provide two- or four-quadrant architecture, allowing them to function both as a source and a sink to simulate batteries and loads.

The two-quadrant R&S®NGU201 and the four-quadrant R&S®NGU401 provide up to 60 W of output power and sink power, respectively. The channels are floating, gal-vanically isolated and protected against overload and short circuits.

With six measurement ranges for current and a resolution of up to 6 ½ digits when measuring voltage, current and power, the R&S®NGU source measure units are perfect for characterizing devices that work from extremely low power consumption to high currents in the ampere range. Using ammeters with feedback-amplifier technology increases accuracy and widens the sensitivity down to the nA range.

With an acquisition rate of up to 500 000 samples per sec-ond, even extremely fast variations in voltage or current can be captured.

The instruments provide fast load recovery time of < 30 µs combined with minimum overshoot even during a demand-ing load change.

The linear design of the output stages allows the R&S®NGU source measure units to operate as a source and sink with minimum residual ripple and noise.

The two-quadrant R&S®NGU201 source measure unit is a new member in the family of wireless communications test instruments, mainly designed to supply devices under test with extremely low sleep currents, such as Bluetooth® low energy devices.

AT A GLANCE

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Rohde & Schwarz is under license.

Rohde & Schwarz R&S®NGU Source Measure Units 3

BENEFITS AND KEY FEATURES


It is ideal for powering battery-operated devices due to its adjustable output impedance and fast impedance regulation. The optional battery simu lation function provides test conditions that imitate the use of a real battery. An optional volt-meter input makes an additional digital multime-ter unnecessary in many applications.

The four-quadrant R&S®NGU401 source mea-sure unit is the semiconductor testing specialist for general-purpose applications that span many different industries and many different devices under test. It can act as bipolar power supply or bipolar electronic load. It comes with a modula-tion input to connect an arbitrary generator, for instance, enabling the instrument to act also as an AC source.

Technology for challenging tasks ► Fast load regulation ► Minimum residual ripple and low noise ► Readings with up to 6 ½ digit resolution ► Galvanically isolated, floating channels ► Output stage isolated with relays ► Voltage priority and current priority mode ► High-capacitance mode ► High speed data acquisition (FastLog function) ► Protection functions to safeguard instrument and DUT ► Safety limits to safeguard the DUT ► page 5

R&S®NGU201 – the wireless communications specialist ► Two quadrants: operates as source and sink ► Variable output impedance and constant resistance mode ► Digital voltmeter (DVM) function ► Battery simulation ► page 9

R&S®NGU401 – the semiconductor testing specialist ► Four quadrants: source or sink operation with arbitrary polarity

► Modulation input ► page 11

Easy operation ► High-resolution touchscreen ► Color coding of operating modes ► Graphical display ► QuickArb function ► EasyRamp function ► Save and recall instrument settings ► page 12

Ideal for use in labs and test systems ► Tailored for use in labs and system racks ► Remote sensing ► Front and rear connectors ► Full remote capabilities ► Fast on the bus and on the bench ► Advanced instrument design: compact form factor, quiet operation

► page 13

Key facts

R&S®NGU201 R&S®NGU401Quadrants 2 4

Output voltage 0 V to 20 V –20 V to +20 V

Max. output/sink power 60 W

Max. output/sink current ≤ 6 V: 8 A; > 6 V: 3 A

Load recovery time < 30 µs

Max. acquisition rate 500 ksample/s

R&S®HMP4040 four-channel and R&S®NGP814 four-channel power supply

R&S®HMC8043 and R&S®NGE100B three-channel power supply

R&S®NGU401 single-channel SMU andR&S®NGM202 two-channel power supply

Basic power supplies ► Economical, quiet and stable instruments ► For manual operation and simple computer-controlled operation

► Used in education, on the bench and in system racks

Performance power supplies ► When speed, accuracy and advanced programming features are factors in test performance

► Features such as DUT protection, fast programming times and downloadable V and I sequences

► Used in labs and ATE applications

Specialty power supplies ► Tailored to specific applications ► Unique features such as

— Emulation of the unique characteristics of a battery — Electronic loads to accurately sink current and dissipate power in a controlled manner

► Used in labs and ATE environments

DIFFERENT POWER SUPPLY CLASSES

4

Current

Voltage, standard power supply

Voltage, ¸NGU

Time


Minimum residual ripple and low noiseAdvanced electronic circuitry is often very complex and sensitive to interference on the supply lines. In order to supply interference-free voltage to such sensitive DUTs, the power supplies must provide extremely stable output voltages and currents. All types of ripple and noise need to be avoided. The R&S®NGU source measure units have linear regulation and are ideal for sensitive DUTs.

TECHNOLOGY FOR CHALLENGING TASKSFast load regulationConsumer electronics such as mobile phones and IoT devices require very little power in sleep mode. However, the current increases abruptly as soon as the device switches to transmit mode. A power supply used to power such DUTs must be capable of handling load changes from a few nA to the ampere range without creating volt-age drops or overshoots.

The R&S®NGU source measure units have a circuit design that allows the user to determine how the instrument regulates load changes. The “Fast” default setting is opti-mized for speed, achieving recovery times of < 30 µs. Deactivating “Fast” slightly increases the recovery time, focusing on preventing overshoots under special load conditions.

The measured currents and voltages are displayed with 6 ½ digit resolution. Two

voltage measurement ranges and six current measure ranges provide extremely

high accuracy and resolutions down to 1 µV/100 pA.

Power supplies usually respond to abrupt load changes with overshoot and slow

recovery times. Thanks to specially optimized control circuits, the R&S®NGU soure

measure units achieve recovery times of < 30 µs.

Optimized load recovery time

Time

Current

Voltage

Time

Current

Voltage

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Readings with up to 6 ½ digit resolutionWith a resolution of up to 6 ½ digits when measuring volt-age, current and power, the R&S®NGU source measure units are perfect for characterizing devices that have low power consumption in standby mode and high current in full load operation. Two voltage measurement ranges and six current measurement ranges provide extremly high accuracy and resolutions down to 1 µV/100 pA.

Galvanically isolated, floating outputsThe outputs of the R&S®NGU source measure units are not connected to chassis ground, and are galvanically isolated and protected against overload and short circuits.

Output stage isolated with relaysSwitching off an output channel of a standard power supply usually simply switches off the output voltage. The output stage of the supply remains connected to the output terminals. The R&S®NGU source measure units use relays to isolate the SMU circuits from the connector sockets.

Voltage priority and current priority modeConfiguring and regulating the output voltage (constant voltage mode) is the standard application for power sup-plies. Most power supplies can also be used in constant current mode, where current limiting ensures that only the configured current can flow.

However, these devices are not optimized for fast current limiting. There is a risk of damage to sensitive DUTs due to excessive currents from overshoots in current regulation. To avoid this risk, the R&S®NGU source measure units have separate operating modes for voltage and current regulation.

In voltage priority mode, fast voltage regulation provides short recovery times of less than 30 μs. Current regulation is designed to be somewhat slower to avoid a tendency to oscillation.

When precise and quick current regulation is desired, the R&S®NGU source measure units can be operated in cur-rent priority mode. Optimized for fast current regulation (load recovery time < 50 μs), this mode allows tasks such as LED testing, which are sensitive to even short current spikes.

The standard mode of power supplies provides fast voltage regulation with the risk of

overshoots in current.

The special mode for current-sensitive DUTs provides fast current regulation. It is the

right choice whenever you have to avoid excessively high currents to protect your DUT.

Voltage priority mode Current priority mode

Volta

ge

5

4

3

2

1

0

Min.: 2.036 12 VAvg: 2.313 08 VMax.: 2.682 64 V

Min.: 1.813 26 VAvg: 2.454 01 V Max.: 4.786 46 V

Standard logging samples

FastLog high speed dataacquisition

Time


High speed acquisition (FastLog function)The R&S®NGU source measure units offer the FastLog function to capture voltage and current measurement results. This data can be stored on an external USB stor-age device or can be transferred to an external PC via USB or LAN. With an acquisition rate of up to 500 ksample/s, voltage and current results are available every 2 μs.

Thanks to this FastLog function, even spikes in the micro-second range that cannot be detected with slower instru-ments can be detected in min./max. values.

High-capacitance modeQuite often in a typical measurement configuration, there is a capacitance at the input of the DUT. Connecting the power supply by leads results in a low pass behavior formed by the leads and the capacitance.

Providing the high-capacitance mode, the R&S®NGU source measure units compensate the capacitance and display the current directly at the DUT.

Various parameters can be set at the outputs of the R&S®NGU source measure

units, for example the output impedance, a delay to switch on the outputs and

different trigger modes. The FastLog function provides an acquisition rate up to 500 ksample/s.

FastLog high speed data acquisition

The FastLog function follows voltage/current variations

with a resolution of up to 2 μs. It detects spikes that

would be overseen by slower instruments.

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Protection functions to safeguard instrument and DUTThe R&S®NGU source measure units provide protection functions to make sure the DUT and the instrument are not damaged in the event of a fault. The output channels are protected against overload and short circuits. The maximum voltage, current and power can be set. When an output reaches the set limit, it is automatically switched off and a message is displayed.

Overvoltage protection (OVP)If the voltage exceeds the configured maximum value, the channel is switched off and the corresponding symbol flashes on the display. In current priority mode, different limits can be set for source and sink mode.

Overcurrent protection (electronic fuse, OCP)To better protect sensitive loads, the channels of the R&S®NGU source measure units provide electronic fuses that can be set individually. If the channel current exceeds the set current, the channel is automatically switched off and the overcurrent symbol flashes.

Electronic fuses can be set in source and in sink mode with different values.

Electronic fuse with additional functions: “Fuse Delay At Output-On” specifies how

long the fuse remains inactive after the channel is activated. The sensitivity of the

fuse is specified using the “Fuse Delay Time”. Different limits can be set for source

and sink mode.

There are two settings to define the response behavior of the electronic fuses. The “Fuse Delay At Output-On” speci-fies how long the fuse remains inactive after the channel is activated. The sensitivity of the fuse is specified using the “Fuse Delay Time”. This allows users to modify the behav-ior of the power supply to prevent a channel from being switched off due to a short current spike during operation.

Overpower protection (OPP)Alternatively, instead of the maximum voltage, the maxi-mum power can be set and used as the switch-off parameter.

Overtemperature protection (OTP)The R&S®NGU source measure units have internal over-temperature protection that switches the instrument off if a thermal overload is imminent.

Safety limits to safeguard the DUTTo prevent a DUT from being destroyed by too high volt-ages or currents, safety limits can be set on the R&S®NGU source measure units. Before starting the actual measur-ing task, the user can limit the instrument to values that are not dangerous for the DUT.

The user can set safety limits to limit the adjustment range of the instrument and

prevent a DUT from being damaged due to accidentally using the wrong setting.


When operating as an electronic load, constant resis-tance mode is also available. In this mode, the instrument behaves like an adjustable resistance over the entire load range. This makes it possible to simulate battery discharge with a constant load resistance, for example.

Digital voltmeter (DVM) functionWhile the R&S®NGU201 source measure unit measures the voltage supplied to the DUT, the R&S®NGU-K104 option activates a port that allows an additional internal DVM function to be connected to any other point in the circuitry. This DVM function runs in parallel to the read-back function, and is galvanically separated from the chan-nel circuitry. In many cases, an additional digital multime-ter is not necessary.

Two quadrants: operates as source and sinkThe two-quadrant architecture of this source measure unit allows it to function both as a source and a sink and simu-late batteries or loads. The source measure unit automati-cally switches from source mode to sink mode. As soon as the externally applied voltage exceeds the set nominal voltage, current flows into the instrument. This is indicated by a negative current reading.

Variable output impedance and constant resistance modeA power supply should have an output impedance as low as possible to suppress loading effects on the DUT. However, there are applications where certain battery types need to be simulated in a controlled manner or where it is necessary to simulate the increase in internal impedance as the battery discharges. The R&S®NGU201 source measure unit supports these applications, thanks to its adjustable output impedance range.

The output impedance is regulated very fast. Especially in the range from –50 mΩ to 2 Ω, recovery times of < 200 µs can be achieved.

R&S®NGU201 – THE WIRELESS COMMUNICATIONS SPECIALISTThe R&S®NGU201 source measure unit is tuned for battery drain analysis of any battery-powered device up to 60 W, including mobile phones, tablets and IoT devices, for example. Furthermore, it can be used for battery tests and simulations, thanks to its adjustable output impedance and optional battery simulation tool.

The large high-resolution display makes it easy to read the voltage and current values

(even at great distances) and provides a lot of additional information.

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Battery simulationReal batteries show different characteristics depending on the type of battery and its charging condition. Capacity, open circuit voltage (Voc) and equivalent series resistance (ESR) are important battery characteristics that depend on its state of charge (SoC). The R&S®NGU-K106 option allows users to simulate the behavior of batteries under different charging conditions, e.g. when powering a DUT.

To define a battery model, the data of the battery can be entered easily using the integrated battery model editor. Data sets for the common battery types (Pb, lithium-ion, NiCd and NiMH) are available as preconfigured files. These can be easily modified according to the needs of a specific application. Additional battery model data sets can be loaded from a USB device and stored on the R&S®NGU201 source measure unit.

In particular, when battery-operated devices have to be optimized for lifecycle, the discharging behavior of the bat-tery type needs to be considered. The battery simulator function of the R&S®NGU201 makes it possible to simulate the real battery output performance. Testing can be based on a selected battery model, and battery capacity, SoC and Voc can be set to any state to test the device under spe-cific circumstances.

The charging behavior of a battery can also be simulated. This is particularly important when designing battery chargers. In this application, the R&S®NGU201 source measure unit is used in sink mode.

Both cases provide dynamic simulation, meaning Voc, ESR and SoC change according to charging/discharging conditions like a real battery. The state of charge is shown graphically; all other values are displayed numerically.

The battery simulation software includes data sets of common battery types that can

be easily modified.

Battery simulation: the main parameters to characterize a battery’s condition are

summarized in one display.

Voltage

CurrentSink modeSource mode

Source modeSink mode


Modulation inputThe R&S®NGU401 source measure unit provides a modu-lation input to connect an arbitrary generator, for instance. The output follows the modulation input signal, enabling the instrument to act as an AC source or be used to simu-late glitches or unstable conditions.

Four quadrants: source or sink operation with arbitrary polarityWith its four-quadrant architecture, the R&S®NGU401 can supply positive or negative voltages or currents and can act as a source or sink in both polarities. This enables tasks such as measuring the forward and reverse characteristics of semiconductor devices in a single test operation with-out having to make changes to the circuit.

The power supply automatically switches from source mode to sink mode. When the applied external voltage exceeds the set output voltage, current flows into the device. This is indicated by the opposite sign for current measurement.

R&S®NGU401 – THE SEMICONDUCTOR TESTING SPECIALISTThe R&S®NGU401 source measure unit is the specialist for semiconductor testing. It is designed for general-purpose applications that span many different industries and many different devices under test. The R&S®NGU401 source measure unit can act as bipolar power supply or bipolar electronic load.

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High-resolution touchscreenThe large capacitive touchscreen is the central operating element of the R&S®NGU source measure units. Lightly tapping a numerical value will display a virtual keyboard to input the desired value. Alternatively, the voltage, current and limits for the various protection functions can be set using the rotary knob. Functions that are less frequently used can be accessed and operated via menus.

With a very high resolution, the display sets new standards for this class of instruments. This makes it easy to read the voltage and current values, even at long distances. A variety of additional information such as power values and statistics can also be displayed. Icons clearly show the sta-tus of the actual configuration.

Color coding of operating modesColors are used to indicate the different modes. For exam-ple, an active channel in constant voltage mode light up green, while red is used for constant current mode. When the instrument is in constant resistance mode, the num-bers are displayed in cyan.

Graphical displayThe large display can also be used for graphics. Up to four measurement functions can be selected and plotted versus time, and minimum and maximum values can addi-tionally be marked.

QuickArb functionSome applications require the voltage or the current to be varied during a test sequence, for example when simulating different charging conditions of a battery. The QuickArb function allows users to manually configure time/voltage or time/current sequences via the user inter-face or to program them via external interfaces.

EASY OPERATIONThe QuickArb function of the R&S®NGU source measure units sets new standards: 2048 points are supported per cycle. It is also possible to interpolate between the discrete points and select whether the sequence of voltage values 1 V – 2 V – 3 V is to be run as steps, or whether the volt-age values are to be increased using linear interpolation.

Arb sequences can be programmed to run much faster with the R&S®NGU than with standard power supplies.

The dwell time for a single voltage or current value can be set with a resolution of up to 1 ms. This makes it possible to program very short drops in voltage to test the power-up behavior of a DUT. The dwell times can also be set in the range of hours to implement test sequences extending over days or weeks for long-term testing.

EasyRamp functionSometimes test sequences have to simulate operating conditions where the abrupt rise of the supply voltage has to be avoided. The EasyRamp function of the R&S®NGU source measure units provides the solution. The output voltage can be increased continuously within a timeframe of 10 ms to 10 s. The EasyRamp function can be operated both manually and remotely.

Save and recall instrument settingsThe save and recall functions make it easy to save and recall frequently used settings.

The high-resolution display can also be used for graphical presentations; in this

example the charging current of a capacitor is displayed while the voltage is

increased stepwise.

Numerical values can be entered using the virtual touchscreen keyboard or the

rotary knob.


Fast on the bus and on the benchComplicated measurement sequences require ever faster setting, measuring and command processing times. The R&S®NGU source measure units meet these needs. Thanks to a state-of-the-art multicore architecture, they not only process control commands much faster than con-ventional power supplies, they process them internally in parallel. Users benefit from this in ATE systems. There are also advantages in manual operation, such as faster sequences in Arb mode.

Advanced instrument design: compact form factor, quiet operationThere is never enough space on the bench or in the rack. The R&S®NGU source measure units take up very little space thanks to their compact design.

Since the built-in fan is temperature-controlled, it often runs at a low speed or powers down completely, resulting in very low operating noise.

IDEAL FOR USE IN LABS AND TEST SYSTEMSTailored for use in labs and system racksThe R&S®NGU source measure units are the right choice for challenging applications. They are used in R&D labs and integrated into production test systems.

The instruments can be installed in 19" racks using the R&S®HZN96 rack adapter. Connectors on the rear panel and a compact design are important criteria for use in test systems.

Remote sensingThere is often a significant voltage drop over the supply leads, especially in applications with high current con-sumption. Since power supplies usually maintain a con-stant output voltage, the voltage on the DUT will be lower than the voltage displayed on the power supply. The remote sensing function compensates this voltage drop over the supply leads. The voltage actually present at the load is measured by an additional pair of sense lines, and this value is used to regulate the voltage directly at the load.

Front and rear connectorsThe safety sockets on the front panel of the R&S®NGU source measure units are designed for 4 mm banana plugs. Additional connections (including sense lines) are provided on the rear panel to simplify use in rack systems.

Digital inputs and outputs are optionally available. They can be used as trigger/inhibit inputs and control/fault out-puts. The hardware of the R&S®NGU-K103 option is pre-installed. The function can be activated using a keycode (to be ordered separately).

Full remote capabilitiesFor use in test systems, the R&S®NGU source measure units can be remotely controlled. The following interfaces are available.

USB and LANUSB and LAN (Ethernet) interfaces are installed as stan-dard. All supply parameters can be remotely controlled via these interfaces.

IEEE-488 (GPIB) interface (R&S®NGU-B105 option)The R&S®NGU-B105 interface with an IEEE-488 (GPIB) port is available as an option that can be ordered ex-factory.

All connections are also provided on the rear panel (example: R&S®NGU with

IEEE-488 option installed).

X-axis

Y-ax

is

Specification limit

Actual values with measurement uncertainty and guard band

Specification limit

Measurement uncertainties Guard band

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SPECIFICATIONSDefinitions

GeneralProduct data applies under the following conditions:

► Three hours storage at ambient temperature followed by 30 minutes warm-up operation ► Specified environmental conditions met ► Recommended calibration interval adhered to ► All internal automatic adjustments performed, if applicable

Specifications with limitsRepresent warranted product performance by means of a range of values for the specified parameter. These specifications are marked with limiting symbols such as <, ≤, >, ≥, ±, or descriptions such as maximum, limit of, minimum. Compliance is ensured by testing or is derived from the design. Test limits are narrowed by guard bands to take into account measurement uncertainties, drift and aging, if applicable.

Specifications without limitsRepresent warranted product performance for the specified parameter. These specifications are not specially marked and represent values with no or negligible deviations from the given value (for example, dimensions or resolution of a setting parameter). Compliance is ensured by design.

Typical data (typ.) Characterizes product performance by means of representative information for the given parameter. When marked with <, > or as a range, it represents the performance met by approximately 80 % of the instruments at production time. Otherwise, it represents the mean value.

Nominal values (nom.)Characterize product performance by means of a representative value for the given parameter (for example, nominal impedance). In contrast to typical data, a statistical evaluation does not take place and the parameter is not tested during production.

Measured values (meas.)Characterize expected product performance by means of measurement results gained from individual samples.

UncertaintiesRepresent limits of measurement uncertainty for a given measurand. Uncertainty is defined with a coverage factor of 2 and has been calculated in line with the rules of the Guide to the Expression of Uncertainty in Measurement (GUM), taking into account environmental conditions, aging, wear and tear.

Device settings and GUI parameters are indicated as follows: “parameter: value”.

Typical data as well as nominal and measured values are not warranted by Rohde & Schwarz.

In line with the 3GPP/3GPP2 standard, chip rates are specified in million chips per second (Mcps), whereas bit rates and symbol rates are specified in billion bits per second (Gbps), million bits per second (Mbps), thousand bits per second (kbps), million symbols per second (Msps) or thousand symbols per second (ksps), and sample rates are specified in million samples per second (Msample/s). Gbps, Mcps, Mbps, Msps, kbps, ksps and Msample/s are not SI units.


All data is valid at +23 °C (–3 °C/+7 °C) after 30 minutes warm-up time.

Electrical specificationsOutputs The channel outputs are galvanically isolated and not connected to ground.

Number of output channels 1

Total output power max. 60 W

Output voltage R&S®NGU201 0 V to 20 V

R&S®NGU401 –20 V to +20 V

Maximum output current per channel ≤ 6 V output voltage 8 A

> 6 V output voltage 3 A

Adjustable output impedance R&S®NGU201 –50 mΩ to 100 Ω

Increments R&S®NGU201 1 mΩ

Recovery time R&S®NGU201: ≤ 2 Ω, resistive load < 200 µs

R&S®NGU201: > 2 Ω, resistive load < 10 ms

Adjustable output impedance R&S®NGU401 not available

Voltage ripple and noise 20 Hz to 20 MHz< 500 µV (RMS), < 2 mV (peak-to-peak) (meas.)

Current ripple and noise 20 Hz to 20 MHz < 1 mA (RMS) (meas.)

Electronic loadSink voltage range R&S®NGU201 0 V to 20 V

R&S®NGU401 –20 V to +20 V

Maximum sink power 60 W

Maximum sink current voltage: ≤ 6 V 8 A

voltage: > 6 V 3 A

Sink modes R&S®NGU201constant voltage, constant current, constant resistance

R&S®NGU401 constant voltage, constant current

Constant resistance range R&S®NGU201 0 Ω to 10 kΩ (0.1 Ω increments)

Load regulation in voltage priority mode load change: 10 % to 90 %

Voltage ±(% of output + offset) < 0.01 % + 0.5 mV

Voltage load recovery time in standard moderegulation to within a band of ±20 mV of the set voltage

< 30 µs (meas.)

Voltage load recovery time in high-capacity mode

regulation to within a band of ±20 mV of the set voltage

10 µF to 50 µF (mode low): < 30 µs (meas.)> 50 µF to 470 µF (mode high): < 100 µs (meas.)

Load regulation in current priority mode load change: 10 % to 90 %

Current ±(% of output + offset) < 0.01 % + 0.1 mA

Current load recovery timeregulation to within a band of ±20 mA of the set current

< 50 µs (meas.)

Rise time10 % to 90 % of rated output voltage, resistive load

full load: < 100 µsno load: < 100 µs

Fall time90 % to 10 % of rated output voltage, resistive load

full load: < 100 µsno load: < 100 µs

Minimum pulse width 100 µs

Programming resolution

Voltage 20 V range: 200 μV6 V range: 50 μV

Current

8 A range: 50 μA3 A range: 25 μA100 mA range: 1 μA10 mA range: 100 nA

Programming accuracy

Voltage ±(% of setting + offset)20 V range: < 0.02 % + 2 mV6 V range: < 0.02 % + 1 mV

Current ±(% of setting + offset)

8 A range: < 0.05 % + 2 mA3 A range: < 0.025 % + 500 μA100 mA range: < 0.025 % + 25 μA10 mA range: < 0.025 % + 10 μA

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Output measurementsMeasurement functions voltage, current, power, energy

Readback resolution

Voltage20 V range: 10 μV6 V range: 1 μV

Current

10 A range: 10 μA3 A range: 1 μA100 mA range: 100 nA10 mA range: 10 nA1 mA range: 1 nA10 µA range: 100 pA

Readback accuracy

Voltage ±(% of output + offset)20 V range: < 0.02 % + 2 mV6 V range: < 0.02 % + 500 μV

Current ±(% of output + offset)

10 A range: < 0.025 % + 500 μA3 A range: < 0.025 % + 250 μA100 mA range: < 0.025 % + 15 μA10 mA range: < 0.025 % + 1.5 μA1 mA range: < 0.025 % + 150 nA10 μA range: < 0.025 % + 15 nA

Temperature coefficient (per °C) +5 °C to +20 °C and +30 °C to +40 °C

Voltage 0.15 × specification/°C

Current 0.15 × specification/°C

Remote sensing yes

Maximum sense compensation 20 V range 2 V (meas.)

RatingsMaximum voltage to ground 250 V DC

Maximum counter voltage voltage with the same polarity connected to the outputs

R&S®NGU201 22 V

R&S®NGU401 ± 22 V

Maximum reverse voltage voltage with opposite polarity connected to the outputs

R&S®NGU201 0.5 V

Maximum reverse current for 5 minutes (max.)

R&S®NGU201 3 A

Remote controlCommand processing time < 6 ms (nom.)

Protection functionsOvervoltage protection adjustable

Overpower protection adjustable

Overcurrent protection (electronic fuse) adjustable

Programming resolution 0.1 mA

Response time (Iload > Iresp × 2) at Iload ≥ 2 A < 1.5 ms (meas.)

Fuse delay at output-on 0 ms to 10 s (1 ms increments)

Fuse delay time 0 ms to 10 s (1 ms increments)

Overtemperature protection yes


Special functionsOutput ramp function EasyRamp

EasyRamp time 10 ms to 10 s (10 ms increments)

Output delayDelay per channel 1 ms to 10 s (1 ms increments)

Arbitrary function QuickArb

Parameters voltage, current, time

Maximum number of points 2048

Dwell time 100 µs to 10 h (100 µs increments)

Repetitioncontinuous or burst mode with 1 to 65535 repetitions

Triggermanually via the keyboard, via remote control or via optional interface

Statistics (sampling time) voltage minimum, maximum, average (2 µs)

current minimum, maximum, average (2 µs)

power minimum, maximum, average (2 µs)

energy (2 μs)

Digital trigger and control interfaces digital I/O, R&S®NGU-K103

Maximum voltage (IN/OUT) 24 V

Pull-up resistors (IN/OUT) connected to 3.3 V 20 kΩ

Input level low < 0.8 V (nom.)

high > 2.4 V (nom.)

Maximum drain current (OUT) 500 mA

Modulation input R&S®NGU401 yes

Maximum voltage to ground/channel 250 V DC

Modulation bandwidth R&S®NGU401 DC to 1 kHz

Input level R&S®NGU401 –24 V to +24 V

Accuracy (displayed modulation value) R&S®NGU401 < 0.02 % + 2 mV

Data logging standard mode

Maximum acquisition rateeach recorded sample is the average of 50 000 measured values

10 sample/s

Memory depth internal 800 Mbyte or external memory size

Voltage resolution see readback resolution

Voltage accuracy see readback accuracy

Current resolution see readback resolution

Current accuracy see readback accuracy

Data logging fast mode FastLog

Maximum acquisition rate for voltage, current 500 ksample/s (2 μs)

Memory depth external memory size

Voltage resolution20 V range: 20 μV6 V range: 5 μV

Voltage accuracy±(% of output + offset) 20 V range: < 0.02 % + 2 mV

6 V range: < 0.02 % + 500 μV

Current resolution

10 A range: 20 μA3 A range: 2 μA100 mA range: 200 nA10 mA range: 20 nA1 mA range: 2 nA10 µA range: 200 pA

Current accuracy ±(% of output + offset)

10 A range: < 0.025 % + 500 μA3 A range: < 0.025 % + 250 μA100 mA range: < 0.025 % + 15 μA10 mA range: < 0.025 % + 1.5 μA1 mA range: < 0.025 % + 150 nA10 μA range: < 0.025 % + 15 nA

Digital voltmeter input R&S®NGU201 optional, R&S®NGU-K104

DVM voltage –24 V to +24 V

DVM accuracy ±(% of output + offset) < 0.02 % + 2 mV

Maximum voltage to ground/channel 250 V DC

18

R&S®NGU201, front view R&S®NGU401, front view R&S®NGU201, rear view

Display and interfacesDisplay TFT 5" 800 × 480 pixel WVGA touch

Front panel connections 4 mm safety sockets

Rear panel connections 8-pin connector block

Remote control interfaces standard USB-TMC, USB-CDC (virtual COM port),

LAN

R&S®NGU-B105 IEEE-488 (GPIB)

General dataEnvironmental conditionsTemperature operating temperature range +5 °C to +40 °C

storage temperature range –20 °C to +70 °C

Humidity noncondensing 5 % to 95 %

Power ratingMains nominal voltage 100 V/115 V/230 V (± 10 %)

Mains frequency 50 Hz to 60 Hz

Maximum power consumption 400 W

Mains fuses 2 × T4.0H/250 V

Product conformity

Electromagnetic compatibilityEU: in line with EMC Directive 2014/30/EU

applied standards: ► EN 61326-1 ► EN 55011 (Class A)

Korea KC mark

Electrical safetyEU:in line with Low Voltage Directive 2014/35/EU

applied harmonized standard:EN 61010-1

USA, Canada CSA-C22.2 No. 61010-1

RoHS in line with EU Directive 2011/65/EU EN 50581

Mechanical resistance

Vibration sinusoidal5 Hz to 55 Hz, 0.3 mm (peak-to-peak)55 Hz to 150 Hz, 0.5 g const.,in line with EN 60068-2-6

wideband noise8 Hz to 500 Hz, acceleration: 1.2 g (RMS),in line with EN 60068-2-64

Shock40 g shock spectrum, in line with MIL-STD-810E, method 516.4, procedure I

Mechanical data

Dimensions W × H × D222 mm × 97 mm × 436 mm (8.74 in × 3.82 in × 17.17 in)

Weight 7.1 kg (15.6 lb)

Rack installation R&S®HZN96 option

Recommended calibration intervaloperation 40 h/week over entire range of specified environmental conditions

1 year


ORDERING INFORMATIONDesignation Type Order No.Base unit Two-quadrant source measure unit R&S®NGU201 3639.3763.02

Four-quadrant source measure unit R&S®NGU401 3639.3763.03

Accessories suppliedSet of power cables, quick start guide

Options for R&S®NGU201Digital trigger I/O R&S®NGU-K103 3662.9335.02

Digital voltmeter function R&S®NGU-K104 3663.0390.02

IEEE-488 (GPIB) interface R&S®NGU-B105 3661.0763.02

Battery simulation R&S®NGU-K106 3663.0625.02

Options for R&S®NGU201Digital trigger I/O R&S®NGU-K103 3662.9335.02

IEEE-488 (GPIB) interface R&S®NGU-B105 3661.0763.02

System components19" rack adapter, 2 HU R&S®HZN96 3638.7813.02

1) For options that are installed, the remaining base unit warranty applies if longer than 1 year. Exception: all batteries have a 1 year warranty.2) Excluding defects caused by incorrect operation or handling and force majeure. Wear-and-tear parts are not included.

WarrantyBase unit 3 years

All other items 1) 1 year

OptionsExtended warranty, one year R&S®WE1

Please contact your local Rohde & Schwarz sales office.

Extended warranty, two years R&S®WE2

Extended warranty with calibration coverage, one year R&S®CW1

Extended warranty with calibration coverage, two years R&S®CW2

Extended warranty with accredited calibration coverage, one year R&S®AW1

Extended warranty with accredited calibration coverage, two years R&S®AW2

Extended warranty with a term of one and two years (WE1 and WE2)Repairs carried out during the contract term are free of charge 2). Necessary calibration and adjustments carried out during repairs are also covered.

Extended warranty with calibration coverage (CW1 and CW2) Enhance your extended warranty by adding calibration coverage at a package price. This package ensures that your Rohde & Schwarz product is regularly calibrated, inspected and maintained during the term of the contract. It includes all repairs 2) and calibration at the recommended intervals as well as any calibration carried out during repairs or option upgrades.

Extended warranty with accredited calibration (AW1 and AW2) Enhance your extended warranty by adding accredited calibration coverage at a package price. This package ensures that your Rohde & Schwarz product is regularly calibrated under accreditation, inspected and maintained during the term of the contract. It includes all repairs 2) and accredited calibration at the recommended intervals as well as any accredited calibration carried out during repairs or option upgrades.

Service that adds value► Worldwide► Local and personalized► Customized and flexible► Uncompromising quality► Long-term dependability

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R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG Trade names are trademarks of the owners PD 3608.6802.32 | Version 01.00 | November 2020 (fi) R&S®NGU Source Measure Units Data without tolerance limits is not binding | Subject to change© 2020 Rohde & Schwarz GmbH & Co. KG | 81671 Munich, Germany

Sustainable product design ► Environmental compatibility and eco-footprint ► Energy efficiency and low emissions ► Longevity and optimized total cost of ownership

Certified Quality Management

ISO 9001

Rohde & Schwarz customer supportwww.rohde-schwarz.com/support

Rohde & SchwarzThe Rohde & Schwarz electronics group offers innovative solutions in the following business fields: test and mea-surement, broadcast and media, secure communications, cybersecurity, monitoring and network testing. Founded more than 80 years ago, the independent company which is headquartered in Munich, Germany, has an extensive sales and service network with locations in more than 70 countries.

www.rohde-schwarz.com

Rohde & Schwarz trainingwww.training.rohde-schwarz.com

3608680232

https://www.rohde-schwarz.com/support

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